Injection-Locked DFB Laser Diode in Main and Multiple Side Modes
One Distributed FeedBack (DFB) laser diode with main and multiple side modes injection-locked is proposed and demonstrated. DFB laser diode can be successfully injection-locked not only in the main mode but also in different side modes. Besides, the Side-Mode Suppression Ratio (SMSR) value of each injection-locked mode is enhanced, in which meaning that a new approach suitable for the use of multiple optical sources. The authors' proposed scheme has the potential to be used as optical sources for radio-on-Wavelength Division Multiplexing (WDM) transport systems to provide multi-service.